Disclosed is a method and apparatus for providing timemarking based on speech recognition and a tag. The present embodiment provides a method and apparatus for providing timemarking based on speech recognition and a tag, in which after an audio and video of a selected medical video are separated, scene-based tag data extracted from the video and an audio-based text acquired from the audio are compared with a predefined keyword to determine a keyword for each section of the image, and then perform time marking for each section.